Hi Miguel,
IMO, there should be a possibility to playback PWM sequences as it
supported by nRF52 hardware PMW module. Something like 'int
pwm_play(struct pwm_dev *, uint16_t *pwm_sq, uint32_t pmw_sqsz)'.
BR,
Andrey
On 11.07.2017 06:31, Miguel Azevedo wrote:
Hi,
I am currently developing a PWM driver for mynewt, more specifically a
driver for nRF52 based hardware.
Therefore I came up with this PWM high level API, which will be
described ahead on this e-mail.
Its source code:
https://github.com/mlaz/mynewt-core/blob/pwm_dev/hw/drivers/pwm/include/pwm/pwm.h
This API is based in both the current ADC high level API
https://github.com/apache/mynewt-core/blob/master/hw/drivers/adc/include/adc/adc.h
and the abandoned hal_pwm API
https://github.com/apache/mynewt-core/blob/090_dev/hw/hal/include/hal/hal_pwm.h
.
The API itself is roughly the same as hal_pwm exposes, which aligns
with the following concepts:
-It is assumed that within a system there is a number of discrete PWM
devices which provide a number of channels per device.
-These devices are configurable, its configuration typically
contemplates all the parameters which affect all the provided channels
(global to the device).
-A channel is also configurable and its configuration may or may not
affect other channels provided by the same device, depending on the
device's configuration.
I would be glad to have some feedback from the community, in order to
validate this approach.
Regards,
